Numbers 16:3

16:3 And they assembled against Moses and Aaron, saying to them, “You take too much upon yourselves, seeing that the whole community is holy, every one of them, and the Lord is among them. Why then do you exalt yourselves above the community of the Lord?”

Numbers 31:30

31:30 From the Israelites’ half-share you are to take one portion out of fifty of the people, the cattle, the donkeys, and the sheep – from every kind of animal – and you are to give them to the Levites, who are responsible for the care of the Lord’s tabernacle.”